From 1faaba3dd763f6abe8778f7ef8c40b4f4fee5384 Mon Sep 17 00:00:00 2001 From: "Kumar, Anil" Date: Wed, 16 Jan 2013 14:37:39 +0530 Subject: ARM: davinci: da850: add pinctrl driver DT entries For DT, DaVinci platform can use pinctrl-single driver for handling padconf registers. Enable PINCTRL Kconfig for MACH_DA8XX_DT platform. Add required pinctrl DT entries in da850 dts file. Test procedure 1)Populate DT file with NAND node information. 2)Populate board DT file with pinmux information for NAND. 3)Boot and confirm NAND is detected by the kernel. 4)cat /proc/mtd to show partitions. Signed-off-by: Kumar, Anil Signed-off-by: Sekhar Nori --- arch/arm/mach-davinci/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm/mach-davinci') diff --git a/arch/arm/mach-davinci/Kconfig b/arch/arm/mach-davinci/Kconfig index 0153950f6068..a075b3e0c5c7 100644 --- a/arch/arm/mach-davinci/Kconfig +++ b/arch/arm/mach-davinci/Kconfig @@ -62,6 +62,7 @@ config MACH_DA8XX_DT bool "Support DA8XX platforms using device tree" default y depends on ARCH_DAVINCI_DA8XX + select PINCTRL help Say y here to include support for TI DaVinci DA850 based using Flattened Device Tree. More information at Documentation/devicetree -- cgit v1.2.3 From 01729ccf19b3c136cd93f8837b0a2761c23da700 Mon Sep 17 00:00:00 2001 From: "Vishwanathrao Badarkhe, Manish" Date: Wed, 6 Feb 2013 15:06:22 +0530 Subject: ARM: davinci: da850: add DT node for I2C0 Add I2C0 device tree and pin muxing information to da850-evm. Also, add OF_DEV_AUXDATA for I2C0 controller driver in da850 board dt file to use I2C0 clock. Verified i2c0 node gets created in sys class interface as "/sys/class/i2c-dev/i2c-0/subsystem/i2c-0". nsekhar@ti.com: tested using i2cdetect and i2cdump. Signed-off-by: Vishwanathrao Badarkhe, Manish Signed-off-by: Sekhar Nori --- arch/arm/boot/dts/da850-evm.dts | 6 ++++++ arch/arm/boot/dts/da850.dtsi | 14 ++++++++++++++ arch/arm/mach-davinci/da8xx-dt.c | 8 +++++++- 3 files changed, 27 insertions(+), 1 deletion(-) (limited to 'arch/arm/mach-davinci') diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts index fa04152b24bf..0060903b2b78 100644 --- a/arch/arm/boot/dts/da850-evm.dts +++ b/arch/arm/boot/dts/da850-evm.dts @@ -30,6 +30,12 @@ rtc0: rtc@1c23000 { status = "okay"; }; + i2c0: i2c@1c22000 { + status = "okay"; + clock-frequency = <100000>; + pinctrl-names = "default"; + pinctrl-0 = <&i2c0_pins>; + }; }; nand_cs3@62000000 { status = "okay"; diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi index 8dd15c0426a8..9669e80cbada 100644 --- a/arch/arm/boot/dts/da850.dtsi +++ b/arch/arm/boot/dts/da850.dtsi @@ -56,6 +56,12 @@ 0x30 0x01100000 0x0ff00000 >; }; + i2c0_pins: pinmux_i2c0_pins { + pinctrl-single,bits = < + /* I2C0_SDA,I2C0_SCL */ + 0x10 0x00002200 0x0000ff00 + >; + }; }; serial0: serial@1c42000 { compatible = "ns16550a"; @@ -88,6 +94,14 @@ 19>; status = "disabled"; }; + i2c0: i2c@1c22000 { + compatible = "ti,davinci-i2c"; + reg = <0x22000 0x1000>; + interrupts = <15>; + #address-cells = <1>; + #size-cells = <0>; + status = "disabled"; + }; }; nand_cs3@62000000 { compatible = "ti,davinci-nand"; diff --git a/arch/arm/mach-davinci/da8xx-dt.c b/arch/arm/mach-davinci/da8xx-dt.c index 37c27af18fa0..a1731f0f5b97 100644 --- a/arch/arm/mach-davinci/da8xx-dt.c +++ b/arch/arm/mach-davinci/da8xx-dt.c @@ -37,11 +37,17 @@ static void __init da8xx_init_irq(void) of_irq_init(da8xx_irq_match); } +struct of_dev_auxdata da850_auxdata_lookup[] __initdata = { + OF_DEV_AUXDATA("ti,davinci-i2c", 0x01c22000, "i2c_davinci.1", NULL), + {} +}; + #ifdef CONFIG_ARCH_DAVINCI_DA850 static void __init da850_init_machine(void) { - of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); + of_platform_populate(NULL, of_default_bus_match_table, + da850_auxdata_lookup, NULL); da8xx_uart_clk_enable(); } -- cgit v1.2.3 From 518f97dbb8d047f54c9f9f9b970fb42e1a6c8184 Mon Sep 17 00:00:00 2001 From: "Kumar, Anil" Date: Wed, 6 Feb 2013 09:30:03 +0530 Subject: ARM: davinci: da850: add wdt DT node Add da850 wdt DT node. Add OF_DEV_AUXDATA for wdt driver to use wdt clock. Signed-off-by: Kumar, Anil Signed-off-by: Sekhar Nori --- arch/arm/boot/dts/da850-evm.dts | 3 +++ arch/arm/boot/dts/da850.dtsi | 5 +++++ arch/arm/mach-davinci/da8xx-dt.c | 1 + 3 files changed, 9 insertions(+) (limited to 'arch/arm/mach-davinci') diff --git a/arch/arm/boot/dts/da850-evm.dts b/arch/arm/boot/dts/da850-evm.dts index 0060903b2b78..f712fb607a42 100644 --- a/arch/arm/boot/dts/da850-evm.dts +++ b/arch/arm/boot/dts/da850-evm.dts @@ -36,6 +36,9 @@ pinctrl-names = "default"; pinctrl-0 = <&i2c0_pins>; }; + wdt: wdt@1c21000 { + status = "okay"; + }; }; nand_cs3@62000000 { status = "okay"; diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi index 9669e80cbada..3ec1bda64356 100644 --- a/arch/arm/boot/dts/da850.dtsi +++ b/arch/arm/boot/dts/da850.dtsi @@ -102,6 +102,11 @@ #size-cells = <0>; status = "disabled"; }; + wdt: wdt@1c21000 { + compatible = "ti,davinci-wdt"; + reg = <0x21000 0x1000>; + status = "disabled"; + }; }; nand_cs3@62000000 { compatible = "ti,davinci-nand"; diff --git a/arch/arm/mach-davinci/da8xx-dt.c b/arch/arm/mach-davinci/da8xx-dt.c index a1731f0f5b97..5404e92aeb1a 100644 --- a/arch/arm/mach-davinci/da8xx-dt.c +++ b/arch/arm/mach-davinci/da8xx-dt.c @@ -39,6 +39,7 @@ static void __init da8xx_init_irq(void) struct of_dev_auxdata da850_auxdata_lookup[] __initdata = { OF_DEV_AUXDATA("ti,davinci-i2c", 0x01c22000, "i2c_davinci.1", NULL), + OF_DEV_AUXDATA("ti,davinci-wdt", 0x01c21000, "watchdog", NULL), {} }; -- cgit v1.2.3 From 19c7c0d81a9b1fe7342d0208b629b5e085e4f3ae Mon Sep 17 00:00:00 2001 From: "Kumar, Anil" Date: Wed, 6 Feb 2013 09:30:04 +0530 Subject: ARM: davinci: da850 DT: add support for machine reboot Update the da8xx_restart() function to support machine reboot when booting using DT. Have the function search for the watchdog platform device instead of always using "da8xx_wdt_device" which is never registered in DT case. While at it, also make da8xx_wdt_device static since there is no need for it to be globally visible. Tested machine reboot with both DT and non-DT boot on DA850 EVM. Signed-off-by: Kumar, Anil Signed-off-by: Sekhar Nori --- arch/arm/mach-davinci/devices-da8xx.c | 12 ++++++++++-- arch/arm/mach-davinci/include/mach/da8xx.h | 1 - 2 files changed, 10 insertions(+), 3 deletions(-) (limited to 'arch/arm/mach-davinci') diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c index 2d5502d84a22..cc6916dc4629 100644 --- a/arch/arm/mach-davinci/devices-da8xx.c +++ b/arch/arm/mach-davinci/devices-da8xx.c @@ -359,7 +359,7 @@ static struct resource da8xx_watchdog_resources[] = { }, }; -struct platform_device da8xx_wdt_device = { +static struct platform_device da8xx_wdt_device = { .name = "watchdog", .id = -1, .num_resources = ARRAY_SIZE(da8xx_watchdog_resources), @@ -368,7 +368,15 @@ struct platform_device da8xx_wdt_device = { void da8xx_restart(char mode, const char *cmd) { - davinci_watchdog_reset(&da8xx_wdt_device); + struct device *dev; + + dev = bus_find_device_by_name(&platform_bus_type, NULL, "watchdog"); + if (!dev) { + pr_err("%s: failed to find watchdog device\n", __func__); + return; + } + + davinci_watchdog_reset(to_platform_device(dev)); } int __init da8xx_register_watchdog(void) diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h index 700d311c6854..ef9f70ea30a0 100644 --- a/arch/arm/mach-davinci/include/mach/da8xx.h +++ b/arch/arm/mach-davinci/include/mach/da8xx.h @@ -112,7 +112,6 @@ extern struct da8xx_lcdc_platform_data sharp_lcd035q3dg01_pdata; extern struct da8xx_lcdc_platform_data sharp_lk043t1dg01_pdata; extern struct davinci_spi_platform_data da8xx_spi_pdata[]; -extern struct platform_device da8xx_wdt_device; extern const short da830_emif25_pins[]; extern const short da830_spi0_pins[]; -- cgit v1.2.3